<template>
  <div >
    <!-- 我的频道 -->
    <div class="my-channel-box">
      <div class="channel-title">
        <span>我的频道</span>
        <span>{{isShow?'点击频道删除':'点击进入频道'}}</span>
        <span @click="isShow=!isShow">编辑</span>
      </div>
      <!-- 我的频道列表 -->
      <van-row type="flex">
        <van-col
          span="6"
          v-for="(obj,index) in list"
          :key="obj.id"
          @click="userChannelFn(obj,index)"
        >
          <div class="channel-item van-hairline--surround">
            {{obj.name}}
            <!-- 删除的徽标 -->
            <van-badge
              color="transparent"
              class="cross-badge"
              v-show="isShow"
              v-if="obj.id!==0"

            >
              <template #content>
                <van-icon
                  name="cross"
                  class="badge-icon"
                  color="#cfcfcf"
                  size="12"
                />
              </template>
            </van-badge>
          </div>
        </van-col>
      </van-row>
    </div>

    <!-- 更多频道 -->
    <div class="more-channel-box">
      <div class="channel-title">
        <span>点击添加更多频道：</span>
      </div>
      <!-- 更多频道列表 -->
      <van-row type="flex">
        <van-col span="6"
        v-for="obj in unSelectList"
        :key='obj.id+" "' @click="addFn(obj)"
         >
          <div class="channel-item van-hairline--surround">
            {{obj.name}}
          </div>
        </van-col>
      </van-row>
    </div>
  </div>
</template>

<script>
// 目标显示/隐藏
// 用v-show设置变量控制
export default {
  data () {
    return {
      isShow: false
    }
  },
  props: {
    list: Array,
    allList: Array
  },
  computed: {
    unSelectList () {
      return this.allList.filter(objA => {
        const index = this.list.findIndex(objB => objA.id === objB.id)
        return index === -1
      })
    }
  },
  methods: {
    userChannelFn (obj, index) {
      if (this.isShow === true && index !== 0) {
        this.list.splice(index, 1)
        this.$emit('updateChannel', this.list)
      } else {
        this.$emit('input', obj.id)
        this.$emit('closePop')
      }
    },
    addFn (obj) {
      this.list.push(obj)
      this.$emit('updateChannel', this.list)
    }
  }
}
</script>

<style scoped lang="less">
.van-popup,
.popup-container {
  background-color: transparent;
  height: 100%;
  width: 100%;
}

.popup-container {
  display: flex;
  flex-direction: column;
}

.pop-header {
  height: 90px;
  background-color: #007bff;
  color: white;
  text-align: center;
  font-size: 14px;
  position: relative;
  .title {
    width: 100%;
    position: absolute;
    bottom: 15px;
  }
}

.pop-body {
  flex: 1;
  overflow: scroll;
  padding: 8px;
  background-color: white;
}

.my-channel-box,
.more-channel-box {
  .channel-title {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    line-height: 28px;
    padding: 0 6px;
  }
}

.channel-item {
  font-size: 12px;
  text-align: center;
  line-height: 36px;
  background-color: #fafafa;
  margin: 5px;
}

/*删除的微标 */
.cross-badge {
  position: absolute;
  right: -3px;
  top: 0;
  border: none;
}

/*提示文字 */
.small_title {
  font-size: 12px;
  color: gray;
}
</style>
